After you earn your GED, if you decide to begin your college career at a 2-year public community college, then it is unlikely that you will have to take SAT's … at least not now. Most community colleges do not require SAT's for admission. A public community college is often the best starting point for adult learners who have been out of the classroom for a while. It can be tempting to enroll in “online" colleges that promise convenient hours. But women in your situation commonly find that attending actual on-campus classes provides critical support from teachers and peers that online classes will not. You also need to be wary of the many less-than-reputable online colleges that take advantage of people in your situation by making promises of job-matching and career success that they will never be able to keep.
If you plan to start at a 2-year community college and later transfer to a 4-year college, it's possible that some of the 4-year schools you'll be considering will need SAT results (or ACT results, which are also accepted wherever the SAT is required). BUT … many 4-year colleges do NOT require test scores from transfers, especially those who have earned an Associate's degree (which is the degree you will earn at the community college after two years). Your community college course selection and grades will play the starring role in your admission verdicts (whether SAT's are required or not).